Homopolymerization and copolymerization of isoprene and styrene with a neodymium catalyst using an alkylmagnesium cocatalyst

被引：1
|
作者：
Zhang, QS [1 ]
Ni, XF [1 ]
Zhang, YF [1 ]
Shen, ZQ [1 ]
机构：
[1] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2001年 / 22卷 / 18期
关键词：
catalysts; copolymerization; neodymium; polyisoprene; polystyrene;
D O I：
10.1002/1521-3927(20011201)22:18<1493::AID-MARC1493>3.0.CO;2-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The catalyst system Nd(acac)(3) . 2 H2O/Bu2Mg/CHCl3 shows a fairly high activity in both the homo- and copolymerization of isoprene (IP) and styrene (St) in toluene at 60 degreesC. Copolymers obtained from various comonomer feed ratios were characterized by means of NMR spectroscopy and gel-permeation chromatography. The polyisoprene and poly(IP-co-St) obtained predominantly consist of cis-1,4 IP units. Monomer reactivity ratios were evaluated to be r(IP) = 5.4 and r(St) = 0.38 in the copolymerization.
引用
收藏
页码：1493 / 1496
页数：4
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